The accompanying figure shows a pedigree and the results of a Southern blot analysis of the ?-globin gene for four family members (II-1, II-2, II-4, and II-5). III-2 was just born and neither her health nor her DNA has been analyzed
The figure also shows a restriction map of ?A and ?S alleles and the location of three DNA probes (A, B, and C). If III-2 is analyzed by Southern blot using the same probe(s) as that used on other members of the family, what is the probability that the result will be only one band? A) 0
B) 1/9
C) 1/6
D) 1/4
E) 2/3
C
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You label cells with a radioactive isotope of sulfur (35S). The only molecules that would be radioactively labeled in these cells are:
A. Proteins B. Carbohydrates C. Nucleic acids D. Lipids Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about the composition of different monomers? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following are true statements
regarding the use of DNA in evolutionary comparisons? a. Lineages have a mixture of ancestral and novel DNA sequences. b. Mutations inevitably change DNA sequences over time. c. Mutations occur randomly. d. Most mutations are neutral. e. All of these are true
The process whereby repeated, short stimuli provided to a hippocampal neuron have the effect of strengthening the synapse it makes with other neurons is specifically referred to as
A. short-term potentiation. B. long-term potentiation. C. neurotransmission. D. synaptic reuptake. E. None of the answers are correct.
Experimental subjects are given a pill to test its effectiveness on reducing the duration of a cold. How should the control group be treated?
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